METHOD FOR BALANCING CYLINDERS OF AN INTERNAL COMBUSTION ENGINE
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United States of America Patent
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Aug 13, 2015
app pub date -
Feb 3, 2015
filing date -
Feb 13, 2014
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Abstract
A method for balancing a plurality of cylinders during operation of an internal combustion engine having a plurality of gas admission valves includes operating the internal combustion engine with a first common ignition timing for each of a plurality of cylinders. While operating with the first common ignition timing, a cylinder having an above-average knock level is determined, and an opening duration of the gas admission valve associated with this cylinder is reduced. This is repeated until the knock levels for all cylinders differ from each other by less than a predetermined amount. When the knock levels for all cylinders differ by less than the predetermined amount, the first common ignition timing is advanced to a second ignition timing.
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